Magnetic Graphene-Based Sheets for Bacteria Capture and Destruction Using a High-Frequency Magnetic Field

Hardiansyah, Andri; Yang, Ming; Liao, Hung Liang; Cheng, Yuanna; Destyorini, Fredina; Irmawati, Yuyun; Liu, Chi Ming; Yung, Ming Chi; Hsu, Chuan Chih; Liu, Ting Yu

doi:10.3390/nano10040674

Cited by 13 publications

(4 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The alterations in the composition of functional groups, covering the basal plane and edges of the graphene layer, are also reflected by the changes in the zeta-potential values of GO and rGO–Th. Upon GO conversion to rGO–Th with the elimination of the negatively charged dissociating oxygen groups, the zeta-potential rises from −60.1 mV, which corresponds to the earlier reported values [ 44 ], to −37.1 mV. This value is still lower than the commonly obtained values for pristine rGO, of −15–20 mV [ 45 ], and relates to the impact of the introduced thiol groups.…”

Section: Resultssupporting

confidence: 82%

A Blueprint for the Synthesis and Characterization of Thiolated Graphene

et al. 2021

View full text Add to dashboard Cite

Graphene derivatization to either engineer its physical and chemical properties or overcome the problem of the facile synthesis of nanographenes is a subject of significant attention in the nanomaterials research community. In this paper, we propose a facile and scalable method for the synthesis of thiolated graphene via a two-step liquid-phase treatment of graphene oxide (GO). Employing the core-level methods, the introduction of up to 5.1 at.% of thiols is indicated with the simultaneous rise of the C/O ratio to 16.8. The crumpling of the graphene layer upon thiolation without its perforation is pointed out by microscopic and Raman studies. The conductance of thiolated graphene is revealed to be driven by the Mott hopping mechanism with the sheet resistance values of 2.15 kΩ/sq and dependable on the environment. The preliminary results on the chemiresistive effect of these films upon exposure to ethanol vapors in the mix with dry and humid air are shown. Finally, the work function value and valence band structure of thiolated graphene are analyzed. Taken together, the developed method and findings of the morphology and physics of the thiolated graphene guide the further application of this derivative in energy storage, sensing devices, and smart materials.

show abstract

Section: Resultssupporting

confidence: 82%

A Blueprint for the Synthesis and Characterization of Thiolated Graphene

et al. 2021

View full text Add to dashboard Cite

show abstract

“… 72 There are three different general mechanisms of GBM appearance that lead to bacteriostatic or/and bactericidal activity: knives-like edge-mediated cutting, oxidative stress, and bacterial membrane entrapment. 74 The mechanism of edge cutting by GBM is started by direct contact between the GBM and the bacteria cell membrane. 75 These edges at the molecular level are considered as sharp as knives and work in the same manner to cut the cell membrane mechanically, which then results in bacterial mortality.…”

Section: Resultsmentioning

confidence: 99%

Physically crosslinked PVA/graphene-based materials/aloe vera hydrogel with antibacterial activity

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Magnetic fields have potential applications in medicine as a means of sterilization (high-frequency fields) [73], as well as being a mechanism to increase the sensitivity of pathogens to antibiotics [52,74] and remove bacterial biofilms from surgical instruments [61].…”

Section: Medical Applicationsmentioning

confidence: 99%

Application of a Magnetic Field to Enhance the Environmental Sustainability and Efficiency of Microbial and Plant Biotechnological Processes

Sincak,

Luptakova,

Matusikova

et al. 2023

Sustainability

View full text Add to dashboard Cite

Despite the growing prevalence of using living organisms in industry, the control of biotechnological processes remains highly complex and constitutes one of the foremost challenges in these applications. The usage of electromagnetic fields offers a great opportunity to control various biotechnological processes by alternating growth and cell metabolism without influencing the characteristics of the cultivation medium or the products of the biotechnological process. The investigation of electromagnetic field applications across various industries, including food production, medicine, and pollutant mitigation, has yielded substantial insights. We used the scientific databases PubMed and ScienceDirect to select 103 experimental and theoretical articles that included original results suitable for further investigation. This type of search was repeated with every new relevant article iteratively until no new articles could be detected. Notably, even weak, low-frequency magnetic fields can accelerate the growth of certain organisms, further stabilize the bacterial community in activated sludge within wastewater treatment plants, enhance the fermentation capabilities of both yeast and bacteria, enhance metal bioleaching by the activation of bacterial metabolism, or improve the metal tolerance of plants during the phytoremediation process. Moreover, magnetic fields exhibit a promising sustainable possibility for the better control of biotechnological processes, thus making these processes more competitive compared with the currently used long-term unsustainable extraction of metals. Although with these interesting results, these examples represent highly exceptional applications. Despite these examples, the overall application potential of magnetic fields remains largely unexplored and unknown.

show abstract

Magnetic Graphene-Based Sheets for Bacteria Capture and Destruction Using a High-Frequency Magnetic Field

Cited by 13 publications

References 43 publications

A Blueprint for the Synthesis and Characterization of Thiolated Graphene

A Blueprint for the Synthesis and Characterization of Thiolated Graphene

Physically crosslinked PVA/graphene-based materials/aloe vera hydrogel with antibacterial activity

Application of a Magnetic Field to Enhance the Environmental Sustainability and Efficiency of Microbial and Plant Biotechnological Processes

Contact Info

Product

Resources

About